educoder/app/controllers/polls_controller.rb

class PollsController < ApplicationController
  # before_action :check_poll_status 问卷的发消息和定时任务没有做
  before_action :require_login,except: [:index]
  before_action :find_course, except: [:show,:poll_setting,:commit_setting,:edit,:update,:start_answer,:commit_poll,
                                       :commit_result,:poll_lists,:cancel_publish,:cancel_publish_modal,:common_header]
  before_action :get_poll_and_course, only: [:show,:poll_setting,:commit_setting,:edit,:update,:start_answer,
                                             :commit_poll,:commit_result,:poll_lists,:cancel_publish,
                                             :cancel_publish_modal,:common_header]
  before_action :user_course_identity
  before_action :is_course_teacher, except: [:index,:start_answer,:poll_setting,:commit_poll,:commit_result,:poll_lists,:common_header]  #判断是否为课堂老师
  before_action :check_user_status
  before_action :is_course_public, only: [:set_public]
  before_action :check_user_on_answer, only: [:show,:start_answer,:commit_poll,:poll_lists]  #判断当前用户在问卷的权限/老师是否属于分班的权限
  before_action :validate_params, only: [:create,:update]
  before_action :validates_multi_ids, only: [:publish,:end_poll,:destroys,:set_public,:join_poll_banks]
  before_action :check_poll_setting_status,only: [:commit_setting]
  before_action :get_questions_count ,only: [:start_answer,:show,:commit_result,:edit]
  before_action :check_user_id_start_answer,only: [:start_answer]
  before_action :check_poll_question_complete,only: [:commit_poll]  #问卷提交前来判断问题是否完成
  before_action :check_poll_commit_result,only: [:commit_result]
  before_action :get_all_polls_commit, only: [:commit_result]  #该问卷全部的用户
  before_action :get_left_banner_id, only:[:common_header,:start_answer,:new,:edit,:index]
  include PollsHelper

  def index
    ActiveRecord::Base.transaction do
      begin
        # 按发布时间或创建时间排序
        @polls_all = @course.polls
        member_show_polls = @polls_all.publish_or_not # 已发布的或已截止的问卷
        @current_user_ = current_user
        @course_status = @course.is_end ? 0 : 1   # 课堂是否结束
        @course_is_public = @course.is_public
        @polls_count = @polls_all.count  # 全部页面，需返回
        @polls_unpublish_counts = @polls_all.poll_by_status(1).count #未发布的问卷数
        @polls_published_counts = @polls_all.poll_by_status([2, 3]).count  # 已发布的问卷数

        # 课堂的学生人数
        @course_all_members = @course.students #当前课堂的全部学生
        @course_all_members_count = @course_all_members.count  #当前课堂的学生数
        @current_student = @course_all_members.find_by(user_id: current_user.id)  #当前用户是否为课堂的学生

        # polls的不同用户群体的显示
        if @user_course_identity < Course::STUDENT      # @is_teacher_or 1为老师/管理员/助教
          @is_teacher_or = 1
          @teacher_groups_ids = @course.charge_group_ids(current_user)
          @polls = @polls_all                                        #老师能看到全部的问卷，不管是已发布的/未发布的/已截止的/统一设置的/私有设置的（看到内容不同）
        elsif @user_course_identity == Course::STUDENT  # 2为课堂成员，能看到统一设置的和自己班级的
          @is_teacher_or = 2
          member_group_id = @current_student.try(:course_group_id).to_i  # 成员的分班id，默认为0
          if member_group_id == 0   #表示是课堂的未分班成员,只能查看统一设置的试卷（已发布的/已截止的）
            @polls = member_show_polls.size > 0 ? member_show_polls.public_or_unset : []
          else   #已分班级的成员，可以查看统一设置和单独设置（试卷是发布在该班级）试卷
            # 已发布 当前用户班级分组的 试卷id
            poll_settings_ids = @course.poll_group_settings.where(course_group_id: member_group_id).poll_group_published.pluck(:poll_id).uniq  # 选择成员的班级id等于课堂问卷设置的班级id
            @polls = member_show_polls.present? ? member_show_polls.public_or_unset.or(member_show_polls.where(id: poll_settings_ids)) : []
          end
        else  #用户未登陆或不是该课堂成员,仅显示统一设置的（已发布的/已截止的），如有公开，则不显示锁，不公开，则显示锁
          @is_teacher_or = 0
          @polls = member_show_polls.size > 0 ? member_show_polls.public_or_unset : []
        end
        if @polls.count > 0
          if params[:type].present?
            choose_type = params[:type]
            member_group_id = @current_student.try(:course_group_id).to_i  # 成员的分班id，默认为0
            if @is_teacher_or == 2 && member_group_id > 0
              poll_groups_sets = @course.poll_group_settings.where(course_group_id: member_group_id).poll_group_published
              poll_settings_ids = poll_groups_sets.pluck(:poll_id)
              poll_ended_ids = poll_groups_sets.poll_group_ended.pluck(:poll_id).uniq
              # poll_settings_ids = @course.poll_group_settings.where(course_group_id: member_group_id).poll_group_ended.pluck(:poll_id).uniq
              if choose_type.to_i == 2
                @polls = @polls_all.present? ? @polls_all.poll_by_status(2).public_or_unset.or(@polls_all.where(id:(poll_settings_ids - poll_ended_ids).uniq)).distinct : []
              elsif choose_type.to_i == 3
                @polls = @polls_all.present? ? @polls_all.poll_by_status(3).public_or_unset.or(@polls_all.where(id: poll_ended_ids)).distinct : []
              end
            else
              @polls = @polls.poll_by_status(choose_type)
            end
          end

          if params[:search].present?
            search_type = params[:search].to_s.strip
            @polls = @polls.poll_search(search_type)
          end

          # 分页
          @polls_select_count = @polls.size
          @polls = @polls.order( "IF(ISNULL(publish_time),0,1), publish_time DESC,created_at DESC")
          @page  = params[:page]  || 1
          @limit = params[:limit] || 15

          @polls = @polls.page(@page).per(@limit)
          @polls = @polls&.includes(:poll_users,:poll_questions,:poll_group_settings)

        else
          @polls = []
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception(e.message)
        raise ActiveRecord::Rollback
      end
    end
  end

  def new
    ActiveRecord::Base.transaction do
      begin
        @poll = Poll.new
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("问卷创建失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # polls_status  问卷状态，1为创建成功，但未发布；2为已发布；3表示已截止
  # show_result true则在截止时间之后对课堂成员公开答题统计，0则不公开,默认为true
  # is_public true 为公开/ false为私有，默认为false
  # exercise_bank_id  试卷的id
  # unified_setting   true 统一设置 / false为分班设置，默认为true
  # un_anonymous 是否实名，默认为false，即不公开
  def create
    ActiveRecord::Base.transaction do
      begin
        poll_name = params[:polls_name]
        poll_desc = params[:polls_description]
        poll_options = {
            :polls_name => poll_name,
            :polls_description => poll_desc,
            :user_id => current_user.id,
            :course_id => @course.id,
            :polls_status => 1,
            :polls_type => "Course",
        }
        @poll = Poll.create(poll_options)
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("问卷创建失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  def edit
    ActiveRecord::Base.transaction do
      begin
        @poll_questions = @poll.poll_questions.order("question_number ASC")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("页面请求失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  def update
    ActiveRecord::Base.transaction do
      begin
        poll_name = params[:polls_name]
        poll_des = params[:polls_description]
        poll_params = {
            :polls_name => poll_name,
            :polls_description => poll_des
        }
        @poll.update_attributes(poll_params)
        normal_status(0,"问卷更新成功！")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("没有权限")
        raise ActiveRecord::Rollback
      end
    end
  end

  #show页面应该是老师的题型预览页面及问题/答案的编辑，老师页面的
  def show
    ActiveRecord::Base.transaction do
      begin
        if @user_course_identity < Course::STUDENT
          @is_teacher_or = 1
        else
          @is_teacher_or = 0
        end
        @poll_questions = @poll.poll_questions&.includes(:poll_answers).order("question_number ASC")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("没有权限")
        raise ActiveRecord::Rollback
      end
    end
  end

  def common_header
    ActiveRecord::Base.transaction do
      begin
        if @user_course_identity > Course::ASSISTANT_PROFESSOR
          @is_teacher_or = 0
          @user_poll_answer = @poll.check_user_votes_status(current_user)
        else
          @is_teacher_or = 1
          @user_poll_answer = 3  #教师页面
        end
        poll_status = @poll.get_poll_status(current_user.id)
        poll_id_array = [@poll.id]
        @poll_publish_count = get_user_permission_course(poll_id_array,2).count   #是否存在已发布的
        @poll_unpublish_count = get_user_permission_course(poll_id_array,1).count  #是否存在未发布的

        if (@poll_publish_count == 0) && (@poll_unpublish_count == 0)  #即表示没有分班
          if poll_status == 1
            @poll_unpublish_count = 1   #试卷未发布，且课堂没有分班的时候
          elsif poll_status == 2
            @poll_publish_count = 1   #试卷未发布，且课堂没有分班的时候
          end
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("没有权限")
        raise ActiveRecord::Rollback
      end
    end
  end

  #立即发布的弹窗内容
  def publish_modal
    ActiveRecord::Base.transaction do
      begin
        poll_ids = params[:check_ids]
        if poll_ids.count > 0
          @course_groups = get_user_permission_course(poll_ids,1)
        else
          @course_groups = []
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("没有权限")
        raise ActiveRecord::Rollback
      end
    end
  end
  #首页批量或单独 立即发布,应是跳出弹窗，设置开始时间和截止时间。
  def publish
    ActiveRecord::Base.transaction do
      begin
        check_ids = Poll.where(id: params[:check_ids])
        ex_end_time = params[:end_time] || Time.at(((1.month.since.to_i)/3600.0).ceil * 3600)
        check_ids.each do |poll|
          if poll.unified_setting
            pl_status = poll.polls_status   #则为试卷的状态
          else
            pl_status = poll.poll_group_settings.find_in_poll_group("course_group_id",params[:group_ids]).poll_group_not_published.present? ? 1 : 0   #立即发布针对分组设置的全部未发布的班级才生效
          end
          if pl_status == 1  #如果问卷存在已发布的，或者是已截止的，那么则直接跳过
            g_course = params[:group_ids]  #表示是否传入分班参数,如果传入分班的参数，那么poll的统一设置需修改
            if g_course
              user_course_groups = @course.charge_group_ids(current_user)
              # if course_groups.blank?
              #   user_course_groups = @course.course_groups.present? ?  @course.course_groups.pluck(:id) : []
              # else
              #   user_course_groups = course_groups.pluck(:course_group_id)
              # end
               if g_course.map(&:to_i).sort == user_course_groups.sort   #  如果是设置为全部班级，则问卷不用分组，且问卷设定为统一设置,否则则分组设置
                 poll.poll_group_settings.destroy_all
                 poll_unified = true
               else
                 poll_unified = false
                 g_course.each do |i|
                   poll_group_setting = poll.poll_group_settings.find_in_poll_group("course_group_id",i).first  #根据课堂分班的id，寻找问卷所在的班级
                   if poll_group_setting   #如果该问卷分组存在，则更新，否则新建
                     poll_group_setting.update_attributes(publish_time:Time.now,end_time:ex_end_time)
                   else
                     p_course_group = {
                         :poll_id => poll.id,
                         :course_group_id => i,
                         :course_id => poll.course.id,
                         :publish_time => Time.now,
                         :end_time => ex_end_time,
                     }
                     new_poll_group = poll.poll_group_settings.new p_course_group
                     new_poll_group.save
                   end
                 end
                 group_ids = params[:group_ids]
               end
            else
              poll.poll_group_settings.destroy_all
              poll_unified = true
            end
            if poll.end_time.blank?
              e_time = ex_end_time
            elsif poll.poll_group_settings.end_time_present.count > 0  # 该问卷分组有结束时间为空的
              e_time = poll.poll_group_settings.end_time_present.map(&:end_time).max
            else
              e_time = poll.end_time
            end
            poll_status = set_poll_status(Time.now,e_time)

            poll_params = {
                :publish_time => Time.now,
                :end_time => e_time,
                :polls_status => poll_status,
                :unified_setting => poll_unified
            }
            poll.update_attributes(poll_params)
            if poll.course_acts.size == 0
              poll.course_acts << CourseActivity.new(:user_id => poll.user_id,:course_id => poll.course_id)
            end
            PollPublishNotifyJob.perform_later(poll.id, group_ids)
          end
        end
        normal_status(0, "问卷发布成功！")

        ## 需添加发送消息的接口，稍后添加
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("问卷发布失败")
        raise ActiveRecord::Rollback
      end
    end
  end

  #立即截止的弹窗内容
  def end_poll_modal
    ActiveRecord::Base.transaction do
      begin
        poll_ids = params[:check_ids]
        if poll_ids.count > 0
          @course_groups = get_user_permission_course(poll_ids,3)
        else
          @course_groups = []
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("没有权限")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 首页批量或单独 立即截止，截止时间为当前时间
  def end_poll
    ActiveRecord::Base.transaction do
      begin
        check_ids = Poll.where(id: params[:check_ids])
        check_ids.each do |poll|
          poll_status = poll.get_poll_status(current_user.id)
          if poll_status == 2  #跳过已截止的或未发布的
            g_course = params[:group_ids]  #表示是否传入分班参数,如果传入分班的参数，那么poll的统一设置需修改，poll_group_settings
            if g_course
              # 如果问卷之前是统一设置且分班参数与课堂的分班数不一致，则变为非统一设置，同时创建poll_group_settings
              if poll.unified_setting && g_course.length != @course.course_groups_count
                poll.poll_group_settings.destroy_all
                @course.course_groups.each do |group|
                  poll.poll_group_settings << PollGroupSetting.new(poll_id: poll.id, course_group_id: group.id, course_id: @course.id,
                                                                   publish_time: poll.publish_time, end_time: poll.end_time)
                end
              else
                poll_unified = poll.unified_setting    #这个作为初始化的值是否要好点呢？-hs
              end
              poll_users = poll_unified ? poll.poll_users :
                               poll.poll_users.joins("join course_members on poll_users.user_id = course_members.user_id").where(course_members: {course_group_id: g_course, role: 4})
              poll_group_setting = poll.poll_group_settings
              old_poll_groups = poll_group_setting.find_in_poll_group("course_group_id",g_course)  #问卷分组的截止时间更改
              old_poll_groups.update_all(:end_time => Time.now)
              new_end_time = poll_group_setting.end_time_present.map(&:end_time)   # 问卷结束时间不为空的
              new_end_time_s = new_end_time.size > 0 ? new_end_time.max : Time.now
              new_poll_status = set_poll_status(poll.publish_time,new_end_time_s)
              poll.update_attributes(:end_time => new_end_time_s,:polls_status => new_poll_status,:unified_setting => poll_unified)
            elsif poll.unified_setting
              poll_users = poll.poll_users
              poll.update_attributes(:polls_status => 3, :end_time => Time.now)
            end
            poll_users = poll_users.where("commit_status = 0 and start_at is not null")
            poll_users.update_all(:commit_status => 1, :end_at => Time.now)
          end
        end
        normal_status(0, "问卷截止成功！")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("立即截止失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  #撤销发布的弹窗内容
  def cancel_publish_modal
    ActiveRecord::Base.transaction do
      begin
        poll_ids = [@poll.id]
        if poll_ids.count > 0
          @course_groups = get_user_permission_course(poll_ids,2)
        else
          @course_groups = []
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("没有权限")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 撤销发布,仅指当前的问卷
  def cancel_publish
    ActiveRecord::Base.transaction do
      begin
        g_course = params[:group_ids]
        if !@poll.unified_setting  #如果问卷为分班设置，且传入的班级id存在
          if g_course.present?
            course_group_ids = @course.course_members.course_find_by_ids("course_group_id",g_course).pluck(:user_id).uniq #传入班级的全部学生人数
            all_poll_settings = @poll.poll_group_settings.find_in_poll_group("course_group_id",g_course)  #根据传入的班级id来获取问卷的分组设置
            all_poll_settings.destroy_all  #问卷的设置文件全部删除
            # @poll.poll_users.find_by_group_ids(course_group_ids).destroy_all  #问卷的提交信息
            poll_question_ids = @poll.poll_questions.pluck(:id)   #问卷的全部问卷
            PollVote.find_current_vote("user_id",course_group_ids).find_current_vote("poll_question_id",poll_question_ids).destroy_all
            poll_user_options = {
                :commit_status => 0,
                :start_at => nil,
                :end_at => nil
            }
            @poll.poll_users.find_by_group_ids(course_group_ids).update_all(poll_user_options)   #试卷的用户全部更新为未答题状态
            poll_groups = @poll.poll_group_settings
            if poll_groups.present?   #是否还有问卷的发布分组，如果有的话，则是根据发布规则取最大和最小值
              unified_setting = false
              e_time_present = poll_groups.end_time_present.map(&:end_time)
              p_time_present = poll_groups.publish_time_present.map(&:publish_time)
              e_time = e_time_present.size > 0 ? e_time_present.max : nil
              p_time = p_time_present.size > 0 ? p_time_present.min : nil
              poll_status = 1
              if p_time.nil?  #发布时间为空，则表示问卷未发布
                poll_status = 1
              elsif p_time.present? && e_time.present?
                poll_status = set_poll_status(p_time,e_time)
              end
            else
              unified_setting = true
              p_time = nil
              e_time = nil
              poll_status = 1
            end
            poll_options = {
                :unified_setting => unified_setting,
                :polls_status => poll_status,
                :publish_time => p_time,
                :end_time => e_time
            }
            @poll.update_attributes(poll_options)
            normal_status(0,"分班问卷撤销发布成功！")
          else
            normal_status(-1,"请选择撤销发布班级！")
          end
        else
          poll_user_options = {
              :commit_status => 0,
              :start_at => nil,
              :end_at => nil
          }
          @poll.poll_users.update_all(poll_user_options)
          poll_question_ids = @poll.poll_questions.pluck(:id)
          PollVote.find_current_vote("poll_question_id",poll_question_ids).destroy_all
          poll_new_params = {
              :polls_status => 1,
              :publish_time => nil,
              :end_time => nil,
              :unified_setting => true
          }
          @poll.update_attributes(poll_new_params)
          @poll.poll_group_settings.destroy_all
          normal_status(0,"问卷撤销发布成功！")

          ## @poll.tidings.destroy_all 用户的发送消息全部删除，因接口未定，所以先注释

          ## 需添加发送消息的接口，稍后添加
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("问卷撤销发布失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 首页批量或单独删除
  def destroys
    ActiveRecord::Base.transaction do
      begin
        check_ids = Poll.where(id:params[:check_ids])
        check_ids.each do |poll|
          if poll.present?
            poll.destroy
          end
        end
        normal_status(0, "问卷已删除成功！")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("问卷删除失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 设为公开
  def set_public
    ActiveRecord::Base.transaction do
      begin
        check_ids = Poll.where(id:params[:check_ids])
        check_ids.each do |poll|
          poll.update_attribute('is_public', true)
        end
        normal_status(0, "问卷已设为公开！")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("问卷设为公开失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  ## 加入题库
  def join_poll_banks
    ActiveRecord::Base.transaction do
      begin
        check_ids = Poll.where(id: params[:check_ids])
        check_ids.each do |poll|
          current_ex_bank = current_user.exercise_banks.find_by_container(poll.id,"Poll").first
          if current_ex_bank.present?  #当前用户的选择问卷是否已加入习题库，存在则更新习题库和问题库，否则新建习题库和问题库
            ex_params = {
                :name => poll.polls_name,
                :description => poll.polls_description,
                :course_list_id => poll.course.try(:course_list_id)
            }
            current_ex_bank.update_attributes(ex_params)
            question_bank = QuestionBank.ques_by_container(current_ex_bank.id,current_ex_bank.container_type)  #该习题库是否存在于问题库里
            ques_params = {
                :name => current_ex_bank.name,
                :course_list_id => current_ex_bank.course_list_id
            }
            question_bank.first.update_attributes(ques_params) if question_bank.present?
            current_ex_bank.exercise_bank_questions.destroy_all  # 更新后，习题库的问题全部删除，后续重新再建
          else
            ex_params = {
                :name => poll.polls_name,
                :description => poll.polls_description,
                :user_id => current_user.id,
                :is_public => 0,
                :course_list_id => poll.course.try(:course_list_id),
                :container_id => poll.id,
                :container_type => "Poll",
                :quotes => 1
            }
            current_ex_bank= ExerciseBank.new ex_params
            if current_ex_bank.save  #如果习题库保存成功，则会创建问题库question_bank
              ques_params = {
                  :name => current_ex_bank.name,
                  :container_id => current_ex_bank.id,
                  :container_type => current_ex_bank.container_type,
                  :quotes => current_ex_bank.quotes,
                  :user_id => current_ex_bank.user_id,
                  :is_public => current_ex_bank.is_public,
                  :course_list_id => current_ex_bank.course_list_id
              }
              question_bank = QuestionBank.new ques_params
              question_bank.save
            end
          end
          # 问卷的问题的输入
          poll.poll_questions.each do |f|
            option = {
                :question_title => f.question_title,
                :question_type => f.question_type,
                :is_necessary => f.is_necessary,
                :question_number => f.question_number,
                :max_choices => f.max_choices,
                :min_choices => f.min_choices
            }
            exercise_bank_question = current_ex_bank.exercise_bank_questions.new option
            exercise_bank_question.save
            ## 问卷答案的输入
            f.poll_answers.each do |a|
              choice_option = {
                  :choice_position => a.answer_position,
                  :choice_text => a.answer_text
              }
              exercise_bank_c = exercise_bank_question.exercise_bank_choices.new choice_option
              exercise_bank_c.save
            end
          end
        end
        normal_status(0, "题库更新成功！")
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("题库更新失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 我的问卷题库
  def my_polls
    ActiveRecord::Base.transaction do
      begin
        ## 我的问卷题库
        @current_user_exercises = current_user.exercise_banks.find_by_c_type("Poll")
        if @current_user_exercises.present?

          if params[:search].present?
            search_type = params[:search].to_s.strip
            @current_user_exercises = @current_user_exercises.exercise_bank_search(search_type)
          end
          page  = params[:page]  || 1
          limit = params[:limit] || 15
          @my_exercises_count = @current_user_exercises.size
          @current_user_exercises = @current_user_exercises.page(page).per(limit)
        else
          @current_user_exercises = []
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("题库调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 公共的问卷题库
  def public_polls
    ActiveRecord::Base.transaction do
      begin
        if current_user.is_certification_teacher
          @user_certification = 1  #用户已通过认证
          @public_exercises = ExerciseBank.find_by_c_type("Poll").public_exercises
          if @public_exercises.present?

            if params[:search].present?
              search_type = params[:search].to_s.strip
              @public_exercises = @public_exercises.exercise_bank_search(search_type)
            end

            page  = params[:page]  || 1
            limit = params[:limit] || 15

            @public_exercises_count = @public_exercises.size
            @public_exercises = @public_exercises.page(page).per(limit)
          else
            @public_exercises_count = 0
            @public_exercises = []
          end
        else
          @user_certification = 0  #用户未通过认证
          @public_exercises_count = 0
          @public_exercises = []
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("题库调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 设置页面,先返回问卷的状态
  def poll_setting
    ActiveRecord::Base.transaction do
      begin
        @user_permission = 2
        @user_course_groups = @course.teacher_group(current_user.id)    #当前老师的分班
        @being_setting_course_ids = @poll.poll_published_ids(current_user.id)   #当前用户已发布的班级的id
        @user_published_setting = @poll.poll_group_settings.find_in_poll_group("course_group_id",@being_setting_course_ids)
        poll_ids = [@poll.id]
        @poll_publish_count = get_user_permission_course(poll_ids,2).count

      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("页面调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  #问卷设置提交
  def commit_setting
    ActiveRecord::Base.transaction do
      begin
        error_count = 0   # 判断循环里是否有已发布/已截止的，且时间更改了的分班。

        course_group_ids = @course.charge_group_ids(current_user)  #当前老师的班级id数组

        poll_status = @poll.get_poll_status(current_user.id)
        if poll_status == 1 && course_group_ids.size > 0 # 问卷未发布，且老师的分班大于1 ，才可以修改统一设置，否则按poll默认的来处理
          unified_setting = params[:unified_setting]
        else
          unified_setting = @poll.unified_setting
        end
        show_result = params[:show_result] ? 1 : 0
        un_anonymous = params[:un_anonymous] ? true : false
        # 统一设置或者分班为0，则更新问卷，并删除问卷分组
        if unified_setting || (course_group_ids.size == 0)
          params_publish_time = params[:publish_time].present? ? params[:publish_time].to_time : nil
          params_end_time = nil
          if params[:end_time].blank?
            if params_publish_time.present?
              params_end_time = params_publish_time + 30.days
            end
          else
            params_end_time = params[:end_time].to_time
          end
          # params_end_time = params[:end_time].present? ? params[:end_time].to_time : nil
          if poll_status == 2 && @poll.publish_time != params_publish_time
            normal_status(-1,"不允许修改发布时间")
          elsif poll_status == 3 && (@poll.end_time != params_end_time || @poll.publish_time != params_publish_time)
            normal_status(-1,"不允许修改发布时间")
          elsif params_publish_time.present? && params_end_time.present? && params_end_time < params_publish_time
            normal_status(-1,"截止时间不能小于发布时间")
          else
            #发布时间小于当前时间，则poll显示为未发布,当截止时间大于当前时间，则显示为已截止
            poll_status_n = set_poll_status(params_publish_time,params_end_time)
            poll_params = {
                :unified_setting => unified_setting,
                :show_result => show_result,
                :un_anonymous => un_anonymous,
                :polls_status => poll_status_n,
                :publish_time => params_publish_time,
                :end_time => params_end_time
            }
            @poll.update_attributes(poll_params)
            @poll.poll_group_settings.destroy_all
            normal_status(0, "问卷设置成功！")
          end
        else
          params_times = params[:publish_time_groups]   #分班返回的json数组{"publish_time_groups":[{"course_group_id":["1","2"],"publish_time":"xx","end_time":"xxx"}]}
          poll_groups = @poll.poll_group_settings.find_in_poll_group("course_id",@course.id)    #当前课堂问卷的班级全部分班信息
          poll_groups_ids = poll_groups.pluck(:course_group_id)   #问卷的全部分班id
          total_common = params_times.map{|k| k[:course_group_id]}.sum  #传入的所有分组的分班id
          total_common_group = poll_groups_ids & total_common   #传入的分班与问卷已存在的分班的交集
          old_poll_groups = poll_groups_ids - total_common_group #后来传入的分班里，没有了的班级，即需要删除
          params_times.each do |t|
            course_id = t[:course_group_id]  #为数组，可能会设置分班为各个班级id的数组
            poll_publish_time = t[:publish_time].present? ? t[:publish_time].to_time : nil
            # poll_end_time = t[:end_time].present? ? t[:end_time].to_time : nil
            poll_end_time = nil
            if t[:end_time].blank?
              if poll_publish_time.present?
                poll_end_time = poll_publish_time + 30.days
              end
            else
              poll_end_time = t[:end_time].to_time
            end
            poll_group = poll_groups.find_in_poll_group("course_group_id",course_id)  #判断该分班是否存在
            if poll_group.present? && poll_group.first.end_time <= Time.now && (poll_end_time != poll_group.first.end_time || poll_publish_time != poll_group.first.publish_time)  #已截止且时间改变的，则提示错误
              error_count += 1
            end
            if poll_group.present? && poll_group.first.publish_time < Time.now && poll_publish_time != poll_group.first.publish_time
              error_count += 1
            end
            if error_count == 0
              common_group = poll_groups_ids & course_id #传入的班级与问卷已存在的班级的交集，即表示已有分班的
              new_group_ids = course_id - common_group  #新传入的班级id
              if common_group.size > 0  #传入的参数存在已发布的分班
                poll_group_params = {
                    :publish_time => poll_publish_time,
                    :end_time => poll_end_time
                }
                poll_group = poll_groups.find_in_poll_group("course_group_id",common_group)
                the_group_setting = poll_group.first
                if the_group_setting.present?
                  the_group_setting_status = set_poll_status(the_group_setting.publish_time,the_group_setting.end_time)
                  if the_group_setting_status == 2
                    poll_group_params = {
                        :publish_time => the_group_setting.publish_time,
                        :end_time => poll_end_time
                    }
                  elsif the_group_setting_status == 3
                    poll_group_params = {
                        :publish_time => the_group_setting.publish_time,
                        :end_time => the_group_setting.end_time
                    }
                  end
                end
                poll_group.update_all(poll_group_params)
              end
              if new_group_ids.size > 0
                new_group_ids.each do |c|
                  poll_group_params = {
                      :poll_id => @poll.id,
                      :course_group_id => c,
                      :course_id => @course.id,
                      :publish_time => poll_publish_time,
                      :end_time => poll_end_time
                  }
                  new_poll_group = PollGroupSetting.new(poll_group_params)
                  new_poll_group.save
                end
              end
            end
          end

          if error_count > 0
            error_count == 0
            normal_status(-1,"已发布/已截止的问卷不允许修改时间")
          else
            if old_poll_groups.size > 0
              old_all_poll_groups = poll_groups.find_in_poll_group("course_group_id",old_poll_groups)
              old_all_poll_groups.destroy_all
            end
            #问卷更新为poll_group_setting的发布时间最小，截止时间最大
            e_time_present = poll_groups.end_time_present.map(&:end_time)
            p_time_present = poll_groups.publish_time_present.map(&:publish_time)
            e_time = e_time_present.size > 0 ? e_time_present.max : nil
            p_time = p_time_present.size > 0 ? p_time_present.min : nil
            poll_status = 1
            if p_time.nil?  #发布时间为空，则表示问卷未发布
              poll_status = 1
            elsif p_time.present? && e_time.present?
              poll_status = set_poll_status(p_time,e_time)
            end

            poll_params = {
                :unified_setting => unified_setting,
                :show_result => show_result,
                :un_anonymous => un_anonymous,
                :polls_status => poll_status,
                :publish_time => p_time,
                :end_time => e_time
            }
            @poll.update_attributes(poll_params)
            if @poll.polls_status == 2
              if @poll.course_acts.size == 0
                @poll.course_acts << CourseActivity.new(:user_id => @poll.user_id,:course_id => @poll.course_id)
              end
            end
            normal_status(0, "问卷设置成功！")
          end

        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("提交出现错误！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 开始答题,如答案提交后则不可再修改, 问卷截止后或提交后,该页面不可再次点击
  def start_answer
    ActiveRecord::Base.transaction do
      begin
        poll_user_current = @poll.poll_users.find_by_group_ids(@poll_current_user_id).first  #查找当前用户是否有过答题
        @poll_status = @poll.get_poll_status(current_user.id)
        if poll_user_current.blank?
          if @user_course_identity > Course::ASSISTANT_PROFESSOR #当为老师的时候，不创建poll_user表，理论上老师是不能进入答题的
            poll_user_params = {
                :user_id => @poll_current_user_id,
                :poll_id => @poll.id,
                :start_at => Time.now,
                :commit_status => 0
            }
            PollUser.create(poll_user_params)
          end
        elsif poll_user_current.start_at.nil?
          poll_user_current.update_attributes(:start_at => Time.now)
        end

        if @user_course_identity < Course::STUDENT || (@poll_status == 3) || (poll_user_current.present? && poll_user_current.commit_status == 1)
          @user_poll_status = 1  #当前用户为老师/问卷已截止/问卷已提交不可编辑
        else
          @user_poll_status = 0  #可编辑
        end

        # @answer_user = User.find_by(id:@poll_current_user_id)
        @answer_status = []
        question_answered = 0

        # 判断是否已经回答还是新建的回答
        @poll_questions.each do |q|
          ques_vote = q.poll_votes.find_current_vote("user_id",@poll_current_user_id)
          if ques_vote.present?
            ques_status = 1
            question_answered += 1
          else
            ques_status = 0
          end
          answer_status = {
              :ques_id => q.id,
              :ques_number => q.question_number,
              :ques_status => ques_status
          }
          @answer_status = @answer_status.push(answer_status)
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("页面调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  # 用户提交问卷
  def commit_poll
    ActiveRecord::Base.transaction do
      begin
        poll_user_current = @poll.poll_users.find_by_group_ids(current_user.id).first
        poll_user_params = {
            :commit_status => 1,
            :end_at => Time.now
        }
        poll_user_current.update_attributes(poll_user_params)
        normal_status(0, "问卷提交成功！")
          ## 需添加发送消息的接口，稍后添加
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("页面调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  #问卷的统计结果
  def commit_result
    ActiveRecord::Base.transaction do
      begin
        # 分页
        @page  = params[:page] || 1
        @limit = params[:limit] || 10
        @poll_export_questions = @poll_questions.order("question_number ASC")
        @poll_questions = @poll_questions.page(@page).per(@limit)
        respond_to do |format|
          format.json
          format.xlsx{
            if @user_course_identity > Course::ASSISTANT_PROFESSOR
              tip_exception(403,"无权限操作")
            else
              polls_export_name = current_user.real_name + "_" + @course.name + "_" + @poll.polls_name + "_" + Time.now.strftime('%Y%m%d_%H%M%S')
              render xlsx: "#{polls_export_name.strip.first(30)}",template: "polls/commit_result.xlsx.axlsx",locals: {poll_questions:@poll_export_questions}
            end
          }
        end
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("页面调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  #问卷的答题列表
  def poll_lists
    ActiveRecord::Base.transaction do
      begin
        poll_ids = [@poll.id]
        @poll_list_status = @poll.get_poll_status(current_user.id)
        @poll_publish_count = get_user_permission_course(poll_ids,2).count
        @poll_unpublish_count = get_user_permission_course(poll_ids,1).count
        @course_all_members = @course.students
        @poll_group_counts = @course.course_groups_count

        if @user_course_identity < Course::STUDENT  #当前为老师，而且老师只能查看自己班级的/课堂的问卷
          @poll_current_user_status = 0
          @poll_users_list = @poll.all_poll_users(current_user.id)   #该老师分班的全部学生
          get_poll_answers(@poll_users_list)
          if @poll_list_status == 1
            @poll_course_groups =[]
          else
            poll_common_ids = @poll.poll_published_ids(current_user.id)
            @poll_course_groups = @course.get_ex_published_course(poll_common_ids)
          end
          if @poll_list_status == 1
            @poll_users_list = []
          end
        elsif @user_course_identity > Course::ASSISTANT_PROFESSOR
          @poll_all_users = @poll.get_poll_exercise_users
          get_poll_answers(@poll_all_users)  # 未答和已答的
          @poll_course_groups = []   #当为学生的时候，不显示分班情况
          @poll_current_user_status = 1  #当前用户的状态，为学生
          poll_current_user = @poll_all_users.find_by_group_ids(current_user.id)  #当前用户是否开始做问卷（提交/未提交/没做）
          if poll_current_user.present? && @poll_list_status != 1 #当前为学生或者有过答题的（提交/未提交),且问卷已发布的
            @poll_users_list = poll_current_user.distinct
          else
            @poll_users_list = []
          end
        else
          @poll_all_users = @poll.get_poll_exercise_users
          get_poll_answers(@poll_all_users)  # 未答和已答的
          @poll_current_user_status = 2  #当前用户非课堂成员
          @poll_users_list = []
        end

        if @poll_users_list.present? && @poll_users_list.count > 0
          @poll_users_count = @poll_users_list.count    #当前显示的全部成员数量
        else
          @poll_users_count = 0
        end

        if @poll_unanswers < 0
          @poll_unanswers = 0
        end

        #筛选/分类,排序
        order = params[:order]
        # b_sort = params[:sort] || "desc"
        choose_type = params[:commit_status]
        group_id = params[:poll_group_id]
        search_content = params[:search]

        if @poll_users_list.present? && @poll_users_list.count > 0

          if order == "student_id"
            @poll_users_list = @poll_users_list.joins(user: [:user_extension]).order("user_extensions.student_id DESC")
          else
            @poll_users_list = @poll_users_list.order("end_at DESC")
          end

          #答题状态的选择
          if choose_type.present?
            @poll_users_list = @poll_users_list.commit_by_status(choose_type)
          end

          #班级的选择
          if group_id.present?
            poll_students = @course_all_members.course_find_by_ids("course_group_id",group_id)  # 问卷所分班的全部人数
            user_ids = poll_students.pluck(:user_id).reject(&:blank?)
            @poll_users_list = @poll_users_list.find_by_group_ids(user_ids)
          end

          #搜索
          if search_content.present?
            @poll_users_list = @poll_users_list.joins(user: :user_extension).where("CONCAT(lastname, firstname) like ? OR student_id like ?", "%#{search_content}%", "%#{search_content}%")
          end

          logger.info("#######F_______@poll_users_list_last___@users_ids________________####{@poll_users_list.pluck(:user_id)}")

          @poll_users_size = @poll_users_list.count

          # 分页
          page  = params[:page] || 1
          limit = params[:limit] || 20
          @poll_users_list = @poll_users_list.page(page).per(limit)
          logger.info("#######F_______@poll_users_list_after_page___@users_ids________________####{@poll_users_list.pluck(:user_id)}")
        else
          @poll_users_list = []
          @poll_users_size = 0
        end

        @current_user = current_user
      rescue Exception => e
        uid_logger_error(e.message)
        tip_exception("页面调用失败！")
        raise ActiveRecord::Rollback
      end
    end
  end

  private

  def is_course_teacher
    unless @user_course_identity < Course::STUDENT #为老师/助教/管理员
      tip_exception("403", "")
    end

  end

  def validate_params
    normal_status(-1, "问卷标题不能为空！") if params[:polls_name].blank?
    normal_status(-1, "问卷标题不能超过60个字符") if (params[:polls_name].present? && params[:polls_name].length > 60)
    normal_status(-1, "问卷描述不能超过100个字符") if (params[:polls_description].present? && params[:polls_description].length > 100)
  end

  def poll_params
    params.require(:poll).permit(:polls_name,:polls_status,:publish_time,:end_time,:polls_description,
                                 :show_result,:exercise_bank_id,:is_public,:unified_setting,:un_anonymous)
  end

  # 获得问卷及课堂
  def get_poll_and_course
    @poll = Poll.find_by(id: params[:id])
    if @poll.blank?
      tip_exception(404)
    else
      @course = @poll.course
      tip_exception(404) if @course.blank?
    end
  end

  # 当前课堂及用户的判断
  def check_user_status
    unless @course.is_public == 1 || (@course.is_public == 0 && @user_course_identity < Course::NORMAL) #课堂的成员/管理员才可以
      tip_exception(403)
    end
  end

  # 在设置问卷公开前，需判断课堂是否公开
  def is_course_public
    unless @course.is_public == 1  # 0为私有，1为公开
      tip_exception(403)
    end
  end

  ## 判断开始答题页面的用户权限
  def check_user_on_answer
    poll_status = @poll.get_poll_status(current_user.id)
    if @user_course_identity == Course::STUDENT && poll_status == 1   #问卷未发布，且当前用户不为老师/管理员
      normal_status(-1, "未发布问卷！")
    elsif @user_course_identity > Course::STUDENT && (!@poll.is_public ||  (@poll.is_public && !@poll.unified_setting))  ##不为课堂成员，且问卷不为公开的,或问卷公开，但是不是统一设置的
      normal_status(-1, "问卷暂未公开！")
    end
  end

  def check_unified_setting?(poll)  #问卷是否统一设置，如为分班设置，当前用户是否在班级内
    if !poll.unified_setting  #如果为分班设置，则需判断用户是否在班级内
      poll_group_settings = poll.poll_group_settings.pluck(:course_group_id)
      member = @course.course_members.course_find_by_ids("user_id",current_user.id)
      member_group_id = member.pluck(:course_group_id).uniq
      if (member_group_id & poll_group_settings).size > 0 || @user_course_identity < Course::STUDENT
        true
      else
        false
      end
    else
      true
    end
  end

  def validates_multi_ids
    if params[:check_ids].blank? || params[:check_ids].count <= 0
      normal_status(-1, "请选择问卷！")
    elsif params[:check_ids].count > 15
      normal_status(-1, "最多只能选择15条数据！")
    end
  end

  def set_poll_status(publish_time,end_time)
    time_now_i = Time.now
    if publish_time.present? && end_time.present? && publish_time <= time_now_i && end_time > time_now_i
      2
    elsif publish_time.nil? || (publish_time.present? && publish_time > time_now_i)
      1
    elsif end_time.present? && end_time <= time_now_i
      3
    # elsif end_time.present? && publish_time.present? && end_time < publish_time
    #   normal_status(-1,"时间设置错误！")
    else
      1
    end
  end

  def get_questions_count
    @poll_questions = @poll.poll_questions&.includes(:poll_answers,:poll_votes).order("question_number ASC")
    @poll_questions_count = @poll_questions.count # 全部的题目数
    @poll_question_singles = @poll_questions.ques_count(1).all.count # 单选题
    @poll_question_doubles = @poll_questions.ques_count(2).all.count # 多选题
    @poll_question_mains = @poll_questions.ques_count(3).all.count #主观题
  end

  def check_poll_question_complete  #commit_poll 的权限
    poll_user_current = @poll.poll_users.find_by_group_ids(current_user.id).first
    poll_status = @poll.get_poll_status(current_user.id)
    if @user_course_identity < Course::STUDENT || (poll_status == 3) || (poll_user_current.present? && poll_user_current.commit_status == 1)
      normal_status(-1,"用户没有权限!")  #老师/管理员在提交时没有权限
    else
      necessary_answer = 0
      poll_questions = @poll.poll_questions
      necessary_question = poll_questions.ques_necessary  # 问卷必答的问题
      necessary_question.each do |q|
        user_vote = q.poll_votes.find_current_vote("user_id",current_user.id)
        vote_answer_id = user_vote.pluck(:poll_answer_id).reject(&:blank?).size
        vote_text_count = user_vote.pluck(:vote_text).reject(&:blank?).size
        if vote_answer_id == 0 && vote_text_count == 0
          necessary_answer += 1
        end
      end
      if necessary_answer > 0
        normal_status(-1,"问卷提交失败，有#{necessary_answer}个未答的必答题!")
      end
    end
  end

  def check_poll_commit_result
    poll_status = @poll.get_poll_status(current_user.id)
    commit_poll_user = @poll.poll_users.find_by_group_ids(current_user.id).commit_by_status(1) #当前用户已提交问卷的
    unless (@user_course_identity < Course::STUDENT) || ((@poll.show_result == 1)  && (poll_status == 3) && commit_poll_user.present?)
      normal_status(-1,"没有权限！") #当前为老师/问卷公开统计，且问卷已截止，且用户有过回答的
    end
  end

  def check_user_id_start_answer #判断用户在开始答题时，是否有用户id传入,如果为老师，则id必需，否则为当前用户的id
    user_login = params[:login]
    # @poll_current_user_id = params[:user_id]
    if user_login.blank? && @user_course_identity < Course::STUDENT  #id不存在，且当前为老师/管理员等
      normal_status(-1,"请输入学生登陆名！")
    else
      @answer_user = User.find_by(login:user_login)
      if @answer_user.blank?
        normal_status(404,"答题用户不存在")
      else
        @poll_current_user_id = @answer_user.id || current_user.id
      end
    end
  end

  def get_all_polls_commit
    @poll_questions = @poll.poll_questions.order("question_number ASC")
    @poll_commit_ids = @poll.poll_users.commit_by_status(1).pluck(:user_id) #问卷提交用户的id
    # 全部页面，需返回
    @poll_questions_count = @poll_questions.size
  end

  def get_user_permission_course(poll_ids,status)  #获取用户权限范围内的已发布/未发布
    poll_status = status.to_i
    unpublish_group = []
    # g_course_ids = @course.teacher_course_groups.get_user_groups(current_user.id).pluck(:course_group_id).reject(&:blank?).uniq
    # if g_course_ids.blank? || g_course_ids.include?(0) #当前用户的分班权限为空，即具体全部的分班权限
    #   user_groups_id = @course.course_groups.pluck(:id)
    # else
    #   user_groups_id = g_course_ids
    # end
    user_groups_id = @course.charge_group_ids(current_user)
    all_polls = Poll.where(id:poll_ids)
    all_polls.each do |poll|
      if poll.present?
        if poll.unified_setting
          poll_user_status = poll.get_poll_status(current_user.id)   #当前用户的能看到的试卷
          if poll_user_status == poll_status || poll_status == 3 #未发布的情况
            unpublish_group = unpublish_group + user_groups_id
          else
            unpublish_group = []
          end
          # unpublish_group = unpublish_group + user_groups_id
        else
          poll_all_group_settings = poll.poll_group_settings
          poll_group_settings = poll_all_group_settings.poll_group_published.pluck(:course_group_id).uniq  #问卷设置已发布的班级
          if poll_status == 1
            unpublish_group =  user_groups_id - poll_group_settings
          elsif poll_status == 3
            poll_ended_groups = poll_all_group_settings.poll_group_ended.pluck(:course_group_id).uniq
            poll_and_user = user_groups_id & poll_group_settings   #用户已设置的分班
            unpublish_group =  unpublish_group + poll_and_user - poll_ended_groups   #已发布的全部班级减去截止的全部班级
          else
            poll_and_user = user_groups_id & poll_group_settings   #用户已设置的分班
            unpublish_group = unpublish_group + poll_and_user
          end
        end
      end
    end
    unpublish_group = unpublish_group.uniq
    if unpublish_group.size > 0
      course_groups = CourseGroup.by_group_ids(unpublish_group)
    else
      course_groups = []
    end
    course_groups
  end

  def check_poll_setting_status
    publish_course = params[:publish_time_groups]
    unified_setting = params[:unified_setting]
    if @course.is_end
      normal_status(-1,"课堂已结束不能再修改！")
    elsif unified_setting
      poll_group_settings = @poll.poll_group_settings
      if poll_group_settings.present?
        p_time_present = poll_group_settings.publish_time_present.map(&:publish_time).min
        if p_time_present < Time.now
          normal_status(-1,"设置失败，存在已发布的分班！")
        end
      elsif params[:publish_time].blank?
        normal_status(-1,"发布时间不允许为空")
      end
    elsif unified_setting.present? && !unified_setting   #非统一设置，分班不能为空
      if publish_course.present?
        course_ids = publish_course.map{|a| a[:course_group_id]}.sum
        publish_t =  publish_course.map{|a| a[:publish_time]}
        if course_ids.include?(nil) || course_ids.count == 0
          normal_status(-1,"请选择分班！")
        elsif publish_t.include?(nil) || publish_t.count == 0
          normal_status(-1,"发布时间不允许为空")
        end
      else
        normal_status(-1,"请选择分班！")
      end
    # elsif (@poll.poll_status != 1) && (params[:publish_time].to_time != @poll.publish_time) && (@user_course_identity > Course::CREATOR)
    #   normal_status(-1,"已发布/已截止的不能修发布时间！")    #课堂管理员和超级管理员才有权限
    end
  end

  def get_left_banner_id
    left_banner_content = @course.course_modules.search_by_module_type("poll")
    if left_banner_content.present?
      @left_banner_id = left_banner_content.first.id
      @left_banner_name = left_banner_content.first.module_name
    else
      tip_exception(404)
    end
  end

end